单词	expansion fastener
释义	DictionarySeeexpansion bolt expansion fastener expansion bolt expansion bolts An anchoring device having an expandable socket that swells as a bolt is tightened into it; used in masonry walls for attaching timber, etc.
随便看	reactor event report reactor fuel reactor fuel cycle reactor fuel element reactor fuel pellet reactor fuels and materials reactor gas circulation system reactor grade reactor harmonization working group reactor heat removal reactor heat-removal system reactor heat-transfer system reactor hydraulic test facility reactor incident reactor in-flight test system reactor leak and power safety excursion reactor, nuclear reactor operating limit reactor operations and testing technical review team reactor operations department reactor operations monitoring system reactor operator reactor overpower transient reactor period reactor physics

英语词典包含2567994条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。